Testing device.



G. G. PULMER.

TESTING DEVICE. APPLIOATION FILED s112118, 1911.

1,027,834.. Patented May 28, 1912.

ATTORN EYS COLUMBIA PLANOGRAPH co.,WAsHxNaruN, D. c.

CHARLES Gr. FULMER, 0F MOKEESPORT, PENNSYLVANIA.

TESTING- DEVICE.

Specification of Letters Patent.

Application led September 1S, 1911. Serial No. 649,841.

To all whom t may concern:

Be it known that I, CHARLES G. lumunn,l

other supply pipes, and the primary object of my invention is tocombinemercury and gage tests, whereby the accuracy of a mercury test can bereadily determined by a gage test.

A further object of my invention is to provide an instrument that* canbe advantageously used by gas inspectors and testers for determiningleaks or weak places in the service pipes or mains of a gas, steam,water or air system.

Vith theabove and other objects in view, the invention resides in thenovel construction, combination and arrangement of parts to behereinafter speciiically described and then claimed.

Reference will now be had to the drawing, wherein there is illustrated afront elevation of the testing device that is partly broken away andpartly in section.

A device in accordance with this invention comprises a valve body 1having a longitudinal extension 2 terminating in. a head 3. The valvebody 1 has vertical connections 4 and 5, said connections having aliningports 6 and 7 respectively in communication with a longitudinal port 8provided therefor in the extension 2. The inner end of the port 8terminates in an annular valve seat 9, and the outer end thereof iscurved, as at 10 to terminate in a socket 11 formed in the lower end ofthe head 3. The valve body 1 has'a cylindrical bore 12 alining with thelongitudinal port 8, and the body 1 is reduced and eXteriorly screwthreaded, as at 13 to accommodate a stuiiing boX 14. Rotatably mountedin the stufling box 14 is a valve stem 15 having the outer end thereofprovided with a hand wheel 16 and the inner end with a valve plug 17 anda head 18. The valve plug 17 extends into and is guided by thelongitudinal port,8, and the head 18 is adapted to engage in the annularseat 9 at the end of saidport. The plug 17 is longitudinally grooved orluted, as at 19 whereby the ports 6 and 7 can communicate with the port8 when the head 18 is unseated or the valvein an open position. Formedintegral with the valve body 1 is an angularly disposed extension -20having a port 21 formed therein com- `municating with the vertical port6. The

extension 20 is adapted to be connected by a union or a suitablecouplingto a service line, (not shown). Connected to the vertical connection 4is a shut-01T valve 22 and connected to this valve is a conventionalform of pressure gage 23. Connected to the vertical extension 5 is apump valve 24 provided with a stepped nipple 25 to which a pump canbe'easily connected. The valves l22 and 24 are of the ordinary and wellknown type of globe valve.

The head 3 of t-he longitudinal extension 2 has a central opening 26establishing communication between the socket 11 and a socket 27 in theupper end of said head. Detachably mounted in the socket 27 is the base28 of a vertical tube casing 29, and arranged in said casing is amercury tube 3() that extends through the base 28 and the opening 26.The lower end of the mercury tube 30 terminates in a mercury chamber 31Jformed in a cylinder 32, carried by the head 3, the upper end of thecylinder being reduced and exteriorly screw threaded to enter the socket11. The upper end of the cylinder 32 has a port 33 establishingcommunication between the chamber 31 and the curved end 10 of the port8. The tube- 30 extends into close proximity to the bottom of thechamber 31, and surrounding said tube, between the reduced end of' thecylinder 32 and the head 3 is a resilient gasket 34, said gasket havingan opening 35 registering with the ports 8 and Another resilient gasket36 is interposed between the base 28 and the bottom of the socket 27,and these gaskets are Patented May 28,1912.'

adapted to cushion the mercury tube 30- by a set screw 41.

In using the device for testing purposes in connect-ion with the serviceline of a gas supply, the angularly disposed extension 20 is coupled onto the service line and the stepped nipple 25 is connected to a pump.Then air is pumped into the service line, the air passes into thelongitudinal port 8, through the port 33 and produces a pressure uponthe mercury 39 within the chamber 31. The mercury is forced upwardly inthe tube 30 to indicate by the graduations upon the tube the exactexcessive pressure to which the service line is subjected. Small leaksand weak places in the service line are readily detected when thepressure is increased within the service line, and when the pressureisraised to approximately twelve pounds, as would be indicated by thegraduated tube 30, the band 10 is then set on a level with the mercurywithin the tube 30. The valve head 1S is now seated to close thelongitudinal port 8, and'by further operating the pump, the air willpass upwardly into the gage 23 and indicate the amount of pressure towhich the service line is subjected. The gage 23 lcan be readilycompared with the mercury tube 30, and it is in this manner anyinaccuracy in the gage 23 or the mercury tube 30 can be readilydetected. In other words, a tester has the satisfaction of knowing thateither by the use of the mercury column or the gage that the serviceline has been tested a predetermined number of pounds pressure. Thepressure within the service line can be main tained by closing the valve24, and the valve 22 is closed when it is desired to remove the gage 23either to repair or to renew the same.

What I claim is 1. A testing device comprising a valve body havingvertical ports formed therein, an extension carried by said valve bodyand having a longitudinal port formed therein, a valve carried by saidvalve body and adapted to close the longitudinal port of said extension,an angularly disposed extension carried by said valve body and incommunication with the vertical ports thereof and adapted to beconnected to a service line, a head carried by the longitudinalextension of said valve body, a mercury chamber supported by said head,a tube carried by said head and extending into said chamber, a gagecarried by said valve body and in communication with the vertical portsthereof, and means to facilitate supplying air to said gage and to saidmercury chamber for testing the pressure in the service line connectedto the angularly disposed extension of said valve body.

2. A testing device comprising a valve body having an angularly disposedextension for connection to a service line, a gage in communication withsaid valve body, a cut-oit communicating with the valve body and havinga stepped nipple for connection with a source of air supply, a tubecontaining a mercury column supported from said body and adapted to havemercury forced therein by a pressure of airv through said body, amercury well supported from the valve body and into which said columnextends, and means whereby the gage can be used independently of saidcolumn.

3. A testing device comprising a valve body having means for connectionto a service line, a gage supported from and in communication with saidvalve body, a cut off supported from and in communication with saidvalve body and capable of communicating with a source of air supply, atube containing a mercury column supported from said body and adapted tohave mercury forced therein by a pressure of air through said body, amercury well supported from and communicating with said body and intowhich said column extends, and means carried by the valvebodyrvvherebysaid gage can be used independently of said column. A

4. A testing device comprising a valve body having a longitudinallyextending port and a valve seat therein, said body further provided witha transversely extending port,

an inclined extension communicating with said transverse port andcapable of being connected to a service line, a gage communicating withone end of said transverse port, a cut-off communicating with the otherend of said port and capable of communicating with a source of airsupply, a mercury well supported from said body and communicating withsaid longitudinal port, a tube containing a mercury column supportedfrom said body and extending in said well, and a valve extending in saidbody and capable of engaging said seat whereby the gage can be usedindependently of the column.

5. A testing device comprising a valve body having a longitudinallyextending port, a mercury well communicatingwith said port and supportedby said body, a tube containing a mercury column supported by said bodyand extending in said well, a gage communicating with said port, acut-off communicating with said port and capable of communicating with asource of air sup- In testimony whereof I ax my signature ply, meanscflor establhng commlllneato n the presence of two witnesses.

between sai port an a vservice ine, an

means operable Within Said body for clos- CHARLES G' FULMER 5 ing saidport to the service line whereby the gage can be used independently ofthe column.

Witnesses:

MAX H. SROLOVITZ, CHRISTINA T. Hoon.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

